Cicadas 2024 Trending On. The 2024 broods this year’s double emergence is a rare coincidence : A rare burst of billions of cicadas will rewire our ecosystems for years to come.

Periodical cicadas are a group of insects known for their mass emergences every 13 or 17 years, in which millions of the insects. It isn’t a comet or the upcoming solar eclipse — rather, the emergence of trillions of cicadas.